function detetion_img = detect_process_1(detetion_img,x,y,extract_bits,orgin_bits)
%UNTITLED 此处显示有关此函数的摘要
%   对应像素级非直接LSB定位检测
N=4;%分块大小为4
e_bits=mychar2double(extract_bits);
o_bits=mychar2double(orgin_bits);
p=1;%指向字符的指针
%% 行优先检测
for i=(x-1)*N+1:x*N
    for j=(y-1)*N+1:y*N
        if xor(e_bits(p),o_bits(p)) %%如果不相等
            detetion_img(i,j)=255;
        end
        p=p+1;
    end
end
end

